Governor for engines.



No. 795,705 PATENTED JULY. 25, 1905.

R. 0. KIMBALL.

GOVERNOR FOR ENGINES.

APPLICATION FILED AUG.3,1904.

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GOVERNOR FOR ENGINES.

APPLICATION FILED AUG. 3, 1904.

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UNITED STATES PATENT oEEIoE.

GOVERNOR FOR ENGINES.

Specification of Letters Eatent.

Patented. July 25, 1905.

Application filed August 3, 1904. Serial No. 219,394.

To all 1071 0111, it iii/my concern:

Be it known that'l, RAYMOND C. KIMBALL, a citizen of the United States,residing at Millbank, in the county of Grant, State of South Dakota,have invented certain new and useful Im rovements in Governors forEngines; an I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to steamengine governors, although it will beunderstood that it may be employed in connection with other specifickinds of motors, the object of the invention being to provide a cheapand efiicient construction which will be efficient in its operation andwhich may be readily adjusted to permit of different speeds underdifferent conditions.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is an elevation showing the structure embodying the presentinvention. Fig. 2 is a vertical section taken longitudinally through thestructure shown in Fig. 1. Fig. 3 is a view showing the inner face ofthe escapement-wheel with the pendulum. Fig. 4 is a view showing thehollowface of the pulleywheel with the spring therein. Fig. 5 is anenlarged detail view of connection between the hollow and escapementshafts.

Referring now to the drawings, the present apparatus comprises a hollowshaft -10, which is mounted in a bearing 1 1 upon any suitable specificstyle of support at one end and through which is passed the solid shaft12, having a bearing in the tubular shaft and in the pillow-block 13 orother specific style of bearing supported in any suitable manner, theshaft 12 projecting at both ends from the shaft 10, as illustrated.

Upon the hollow shaft is mounted a pulley-wheel comprising a grooved rim14, having a web 15 at one which connects the rim with the hub 16, thatis fixed on the hollow shaft 10.

Keyed. to the shaft 12 against the open end of the hollow pulley-wheelis an escapementwheel 17, having a pin 18 near its periphery whichprojects into the inclosure of the rim 14, while the web 15 of thepulley has a corresponding pin 19, projecting therefrom within theinclosure of the rim 14 and near to the hub 16. A spiral spring 20 hasan eye 21 at its inner end which is engaged with the pin 19 and has atits outer end an eye 22, which is engaged with the pin 18, so that ifthe pulley be rotated at a higher speed than the escapement-wheel thespring will be wound up, and, conversely, the spring will permit ofrotation of the pulley at a higher speed than the escapement-wheel for atime. In connection with the escapement-wheel is employed a pendulum 23,having a weight 24, which is adjustable longitudinally thereof to varythe period of vibration of the pendulum.

in the usual manner.

The end of the shaft 10 opposite to the pulley is provided with externalthreads 25, which engage the interior threads of one end of a sleeve 26,which at its opposite end is splined to the shaft 12, so that when oneshaft is rotated at a higher speed than the other the sleeve will bemoved longitudinally in one direction or the other, depending upon whichshaft has the higher speed, as will be understood. The sleeve 26 has acircumscribing groove 27, in which is disposed a collar 28, to which isconnected a rod 29, attached at its opposite end to a throttle-lever Thepulley is connected with a movable part of the engine through the mediumof an ordinary belt, and the pendulum is set to permit of a certainspeed of the escapementshaft 12, corresponding to the desired speed ofthe engine. if the speed of the engine increases, the pulley graduallyruns ahead of the escapement-wheel, which is permitted by the spring 20,through the medium of which motion is conveyed from the pulley to theescapement-shaft, this advance movement of the pulley serving to rotatethe threads 25 in the sleeve 26 and to shift the latter longitudinally,with the result that the rod 29 will be moved correspondingly to operatethe throttle 30 and reduce the supply of steam to the engine. The speedof the pulley will 'then decrease so that it will be equal to the speedof the escapement-wheel and escapement-shaft, at which time the sleevewill be shifted longitudinally in the opposite direction to open up thethrottle. In this manner a balance will finally be established.

What is claimed is 1. A governor comprising a hollowexteriorily-threaded shaft, a hollow belt-pulley fixed to the shaft atone end, an escapementshaft passed from the hollow shaft and projectingat both ends therefrom, a sleeve splined to the escapement-shaft andhaving internal threads engaged with those of the hollow shaft, athrottle, connections between the sleeve and throttle for moving thelatter from the sleeve, an escapement-wheel fixed upon theescapement-shaft, a spiral spring within the pulley attached at one endto the pulley and at the other end to the escapement-wheel, and anadjustable pendulum for the escapement-wheel.

2. In an engine-governor, the combination with a throttle, of anescapement-Wheel having a pendulum secured directly thereto, a rotarymember adapted for rotation from the engine to be governed, yieldableconnections between the rotary member and the escapement-wheel, andmeans connected with the rotary member and the escapement-Wheel and withthe throttle and operable by movement of the rotary member andescapement- Wheel with respect to each other, for shifting the throttle.

In testimony whereof I afliX my signature in presence of two witnesses,

RAYMOND C. KIMBALL. Witnesses:

F. B. ROBERTS, H. MIDDLEBROOK.

